Orchard heater



Spt. 3, 1940. wmMAN 2,213,509

ORCHARD HEATER Filed March 12, 195$ 2 Sheets-Sheet 1 46 25 INVENTOR.

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'A ()RNEY.

J. WIDMAN ORCHARD WALTER Sept. 3, 1940.

2 Sheets-Sheet? Filed March 12,, 1958 l' h'l, I III I N V EN TOR.

dvszP/v Mam/w, g 5 g A RNEY Patented Sept. 3, 1940 UNITED STATES ATET oFrlcE 2 Claims.

This invention relates to orchard heaters and it consists in the constructions, arrangements and combinations herein described and claimed.

It is an object of the invention to provide a heater of. novel construction in which air is admitted to the oil or other fuel and to the combustion chamber in such manner that complete combustion of the fuel is effected, producing an intense heat and elimination of smoke.

It is also an object of the invention to provide a novel construction of heater casing which in conjunction with internal parts of the heater function to provide an upwardly flaring flame.

It is a still further object of the invention to provide a heater of few parts, which are cheap to construct and readily assembled.

Additional objects, advantages and features of invention will be apparent from the following description considered in conjunction with the accompanying drawings, wherein Figure 1 is a fragmentary elevational view of a heater constructed in accordance with my invention.

Figure 2 is a cross section on the line 22 of Figure 1.

Figure 3 is an elevational view of a modified form of heater, partly in section.

Attention is first invited to Figures 1 and 2 wherein there is shown a heater in consisting of a drum ll of cylindrical form tapering outwardly in the direction of its upper end, but

adjacent the latter the wall of the drum is in-' wardly flared as at I2 to snugly receive an upwardly flared stack I3. The drum II and stack may be headed as at M, for reinforcement.

The lower end of the drum H has formed therewith an oil or liquid fuel trough [5. The trough I5 is formed as a continuation of the wall of the drum, the wall being bent horizontally inward as at 16, for a suitable distance, defining a circumscribing flange; thence bent downwardly in a vertical plane defining a wall l1. Continuation of the wall I! is at an acute angle as indicated at [8 and thence upwardly at an opposite angle for a short distance as at l9, the wall finally terminating in a vertical wall 20. Thus, it will be seen that the trough I5 is formed of substantially V-shape, and it should be noted that the wall 20] stops short of the upper edge of the flange l6 for a purpose pres-.

ently to be explained. The wall I6 is provided with a multiplicity of staggeredly arranged draft apertures 2i, and the wall I! is similarly provided with apertures 22. The wall of the drum H is also provided with apertures 23 opening upon the combustion chamber 24. I

In order that the drum may be supported, I

provide a base 25 of approved construction to which there is secured a pan llla of a size eX- tending beyond the heater I0, and within the pan there are secured crossed leg members 26. The leg members 26, two in number, are formed. from sheet strap iron crossed at their medial points, as may be seen in Figure 2. Each strap is bent downwardly as at 21, at opposite sides, forming a vertical portion adapted to snugly abut the wall 20 of the trough. The straps are further bent to provide horizontal portions 29 for support of the trough l5 and these portions extend outwardly to a point in line with circumference of the drum H, whence the straps are again bent as at 30. Upstanding straps 32 are secured to the strap members at the portions 30 the straps 32 having a foot 3|. The upper ends of the straps 32 having an upwardly open loop 33 adapted to receive a circumscribing band 34 fixed to the lower end of the drum I I, and for this purpose the band 3% projects below the drum.

Upon the crossed portion of the leg members 26, there is mounted a cup member 35 of a diameter stopping inwardly of the wall 20 of the trough, defining an annular air space 36. The upper edgeof the cup 35 is outwardly flared as at 31, stopping approximately in line with the wall 20 of the trough.

In use, liquid fuel will be fed tothe trough through the fuel pipe 38, the flow being controlled by means of a float valve as defined in my pending application filed February 21, 1938, Serial No. 191,769.

When fuel has reached a proper level in the trough l5 a small quantity of fuel oil will be poured into the pan Ill-a and ignited, preheating the fuel oil in the trough !5. Air admitted through the apertures 22 mixes with vapors of the fuel oil forming a highly combustible mixture, the flame from which will be directed outwardly by reason of the flared edge 3'! of the cup. As the flame increases with consumption of fuel additional air will be drawn rapidly in through the space 36, the apertures 2i and 22, thus supplying the additional air necessary tosupport combustion.

In Figure 3, the drum I l tapers downwardly its full length to its juncture with the wall of the oil trough, eliminating the flange l6, and also the band 34' is shown spaced from the drum and being secured to the drum by means of an inclined wall 38, which may be welded to the drum at its points of contact therewith. In order that the equivalent amount of air supplied by the aperture 2| may be admitted two pairs of rows of apertures 39 are provided.

While I have shown and described preferred forms of the heater, this is by way of illustration only and I consider as my own all such modifications in structure as fairly fall within the scope of the appended claims.

I claim:

1. An orchard heater comprising a, heater drum tapering outwardly in an upward direction, the lower edge of the drum having a circumscribing V-shaped trough integrally formed therewith, the outer wall of the drum having a multiplicity of apertures, a circumscribing band depending from the drum and overlying the apertures, a fuel pan, support members on the pan having upwardly open loops for reception of the band, said support members further having strap members crossed at the vertical axis of the drum, a cup member fixed to the strap members and positioned within the periphery of the trough, the cup member being of a diameter less than the inner periphery of the trough and defining a circumscribing air space, said cup having an outwardly flared upper edge, the edge overlying I the air space, said drum having apertures in the wall thereof above the cup member, and means for feeding fuel to the trough.

2. An orchard heater comprising a drum tapering outward in an upward direction, the lower edge of the drum having a substantially V-shaped annular trough, the outer wall of thedrum having a multiplicity of apertures, a circumscribing band depending from the drum and overlying the apertures, a base member having circumferential spaced means cooperable with the band for support of the drum, a cup member carried by the base and disposed within the periphery of the trough,the cup member being of a diameter less than the inner periphery of the trough defining a circumscribing air space, said cup having an outwardly flared upper edge, said edge overlying the air space, said drum having apertures in the wall thereof above the upper edge of the cup member, and means for feeding fuel to the trough.

, JOSEPH WIDMAN. 25 

